/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.thrift.protocol;

import java.util.Iterator;
import java.util.Map;

/**
 * Helper class that encapsulates struct metadata.
 * 
 */
public class TMessageExt extends TMessage {

	public TMessageExt() {
		super();
		this.context = null;
	}

	public TMessageExt(String n, byte t, int s, Map<String, String> ctx) {
		super(n, t, s);
		this.context = ctx;
	}

	public final Map<String, String> context;

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		if (context != null) {
			sb.append(" context:[");
			Iterator<Map.Entry<String, String>> itor = context.entrySet()
					.iterator();
			while (itor.hasNext()) {
				Map.Entry<String, String> e = itor.next();
				sb.append(e.getKey()).append("=").append(e.getValue());
				if (itor.hasNext())
					sb.append(",");
			}
			sb.append("]");
		}
		return "<TMessageExt name:'" + name + "' type: " + type + " seqid:"
				+ seqid + sb + ">";
	}

	public int contextSize() {
		return context == null ? 0 : context.size();
	}

	public String getContext(String name) {
		return context == null ? null : context.get(name);
	}
}
